January
- January 9 - Pravasi Bharatiya Divas (Non-resident Indian Day)
- January 12 - National Youth Day (India)
- January 15 - Indian Army Day
- January 25 - National Voters' Day (India)
- January 26 - Republic Day (India)
- January 27- International Day of Commemoration in Memory of the Victims of the Holocaust
- January 30 - Martyr's Day (Mahatma Gandhi's Martyrdom Day)
- January 31 - International Street Children's Day
February
- February 4 - World Cancer Day
- February 6 - International Day of Zero Tolerance to Female Genital Mutilation
- February 21 - International Mother Language Day
- February 28 - National Science Day (India)
March
- March 8 - International Women's Day
- March 15 - World Consumer Rights Day
- March 20 - World Sparrow Day
- March 21 - International Day for the Elimination of Racial Discrimination
- March 21 - International Day of Forests
- March 21 - World Down Syndrome Day
- March 21 - World Poetry Day
- March 21 - World Wood Day
- March 22 - World Water Day
- March 24 - World Tuberculosis Day
April
- April 2 - World Autism Awareness Day
- April 7 - World Health Day
- April 8 - International Romani Day
- April 11 - International Louie Louie Day
- April 17 - World Hemophilia Day -
- April 22 - Earth Day
- April 23 - World Book Day
- April 25 - World Malaria Day
- April 26 - World Intellectual Property Day
- April 29 - International Dance Day
- April 30 - International Jazz Day
May
- May 1- International Workers' Day
- May 3 - World Press Freedom Day
- May 5 - International Midwives' Day
- May 6 - International No Diet Day
- May 12 - International Nurses Day
- May 15 - International Day of Families
- May 17 - International Day Against Homophobia and Transphobia
- May 17 - World Information Society Day
- May 22 - International Day for Biological Diversity
- May 23 - World Turtle Day
- May 24 - Commonwealth Day
- May 25 - International Missing Children's Day
- May 31 - World No Tobacco Day
June
- June 5 - World Environment Day
- June 8 - World Oceans Day
- June 14 - World Blood Donor Day
- June 20 - World Refugee Day
- June 21 - World Music Day
- June 21 - World Hydrography Day
- June 21 - International Yoga Day
- June 23 - International Olympic Day
- June 26 - International Day against Drug Abuse and Illicit Trafficking
July
- July 2 - World UFO Day
- July 11 - World Population Day
- July 12 - Malala Day
- July 17 - World Day for International Justice
- July 18 - Mandela Day
- July 26 - Kargil Vijay Diwas
- July 29 - International Tiger Day
August
- August 7 - National Handloom Day
- August 12 - International Youth Day
- August 15 - Indian Independence Day
- August 19 - World Photography Day
- August 20 - World Mosquito Day
- August 20 - Indian Akshay Urja Day
- August 26 - Women's Equality Day
- August 29 - National Sports Day
September
- September 5 - International Day of Charity
- September 5 - Teachers' Day (India)
- September 8 - World Literacy Day
- September 10 - World Suicide Prevention Day
- September 15 - Engineer's Day (India)
- September 15 - International Day of Democracy
- September 16 - International Day of the preservation of ozone layer
- September 19 - International Talk Like a Pirate Day
- September 21 - International Day of Peace
- September 27 - World Tourism Day
- September 28 - World Rabies Day
- September 29 - International Coffee Day
- September 29 - World Heart Day
October
- October 2 - World Vegetarian Day
- October 2 - Gandhi Jayanthi
- October 2 - International Day of Non-Violence
- October 4 - World Animal Day
- October 8 - Indian Air Force Day
- October 9 - World Post Day
- October 10 - World Mental Health Day
- October 14 - World Standards Day
- October 15 - Global Handwashing Day
- October 16 - World Food Day
- October 17 - International Day for the Eradication of Poverty
- October 24 - United Nations Day
November
- November 1 - World Vegan Day
- November 12 - World Pneumonia Day
- November 14 - World Diabetes Day
- November 17 - World Prematurity Day
- November 19 - International Men's Day
- November 20 - Universal Children's Day
- November 21 - World Television Day
- November 25 - International Day for the Elimination of Violence against Women
- November 14 - Children's Day (some countries)
December
- December 1 - World AIDS Day
- December 3 - United Nations' International Day of Persons with Disabilities
- December 5 - International Volunteer Day
- December 7 - International Civil Aviation Day
- December 10 - Human Rights Day
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